From 2bc405831d5bd83f263c2a0eac915ba5292d4cbe Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 22 Apr 2013 18:34:35 -0700 Subject: [PATCH] staging: comedi: das800: tidy up das800_ai_do_cmdtest() For aesthetic reasons, move some of the local variables to the place they are actually used. Also, rename the CamelCase 'startChan' local variable. Remove the unnecessary '()' around the variables passed in the i8253_cascade_ns_to_timer_2div() call. Add a local variable, 'next', to hold the cmd->chanlist[i] value used in the loop that checks the channel/gain list. Replace the comedi_error() with dev_dbg() and shorten the messages a bit. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/das800.c | 34 +++++++++++++------------ 1 file changed, 18 insertions(+), 16 deletions(-) diff --git a/drivers/staging/comedi/drivers/das800.c b/drivers/staging/comedi/drivers/das800.c index 4c28b383869d..3711f81321d9 100644 --- a/drivers/staging/comedi/drivers/das800.c +++ b/drivers/staging/comedi/drivers/das800.c @@ -314,9 +314,6 @@ static int das800_ai_do_cmdtest(struct comedi_device *dev, const struct das800_board *thisboard = comedi_board(dev); struct das800_private *devpriv = dev->private; int err = 0; - int tmp; - int gain, startChan; - int i; /* Step 1 : check if triggers are trivially valid */ @@ -362,11 +359,13 @@ static int das800_ai_do_cmdtest(struct comedi_device *dev, /* step 4: fix up any arguments */ if (cmd->convert_src == TRIG_TIMER) { - tmp = cmd->convert_arg; + int tmp = cmd->convert_arg; + /* calculate counter values that give desired timing */ - i8253_cascade_ns_to_timer_2div(TIMER_BASE, &(devpriv->divisor1), - &(devpriv->divisor2), - &(cmd->convert_arg), + i8253_cascade_ns_to_timer_2div(TIMER_BASE, + &devpriv->divisor1, + &devpriv->divisor2, + &cmd->convert_arg, cmd->flags & TRIG_ROUND_MASK); if (tmp != cmd->convert_arg) err++; @@ -377,18 +376,21 @@ static int das800_ai_do_cmdtest(struct comedi_device *dev, /* check channel/gain list against card's limitations */ if (cmd->chanlist) { - gain = CR_RANGE(cmd->chanlist[0]); - startChan = CR_CHAN(cmd->chanlist[0]); + unsigned int chan = CR_CHAN(cmd->chanlist[0]); + unsigned int range = CR_RANGE(cmd->chanlist[0]); + unsigned int next; + int i; + for (i = 1; i < cmd->chanlist_len; i++) { - if (CR_CHAN(cmd->chanlist[i]) != - (startChan + i) % N_CHAN_AI) { - comedi_error(dev, - "entries in chanlist must be consecutive channels, counting upwards\n"); + next = cmd->chanlist[i]; + if (CR_CHAN(next) != (chan + i) % N_CHAN_AI) { + dev_err(dev->class_dev, + "chanlist must be consecutive, counting upwards\n"); err++; } - if (CR_RANGE(cmd->chanlist[i]) != gain) { - comedi_error(dev, - "entries in chanlist must all have the same gain\n"); + if (CR_RANGE(next) != range) { + dev_err(dev->class_dev, + "chanlist must all have the same gain\n"); err++; } } -- 2.30.2